title: New developments in the measurement of the hemagglutinin content of influenza virus vaccines by single-radial-immunodiffusion.
mesh_terms: D003902:Detergents; D004591:Electrophoresis, Polyacrylamide Gel; D006388:Hemagglutinins / Q000032:analysis*; D005779:Immunodiffusion; D007252:Influenza Vaccines / Q000032:analysis* / Q000592:standards
chemical_list: D003902:Detergents; D006388:Hemagglutinins; D007252:Influenza Vaccines